Thread: Re: [OpenSBC] SipX<=>OpenSBC: inbound route doesn't work

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Re: [OpenSBC] SipX<=>OpenSBC: inbound route doesn't work

From: OpenSBC F. <ope...@op...> - 2008-11-19 05:10:06

Threading was screwed up in the OSS Forum so I am reposting this:

Hi Robert,

OpenSBC can do hairpin if you do it correctly.  The outbound call should 
be sent through the main trunk

UA1 -> OSBC-Main-Trunk -> SIP-Server

When the SIP-Server hairpins/trombones the call back to OpenSBC, it must 
either use one of two listeners based on which config applies

** SIP-Server has static routing policies OR is configured as upper-reg
SIP-Server -> OSBC-BackDoor -> OSBC-Main-Trunk -> UA2

Or

** SIP-Server configured as a trunk provider
SIP-Server -> OSBC-SIP-Trunk -> OSBC-Main-Trunk -> UA2

In the case of the original poster, he is trying to trombone the call 
back to the SIP-Trunk which would cause call-id collisions

Joegen

Re: [OpenSBC] SipX<=>OpenSBC: inbound route doesn't work

From: OpenSBC F. <ope...@op...> - 2008-11-19 10:00:27

My aim is not to do hairpin.


I want to trunk inbound calls only. So I have been tried to test a direct call from analog phone to sip-trunk and I got "SIP/2.0 405 Method Not Allowed"


May be it is because NAT problem?


I added UpperReg route [sip:*@ext.ip:9006] sip:int.ip:9006   but it doesn't help.


May be it is need to add prerouting rule to iptable?

Re: [OpenSBC] SipX<=>OpenSBC: inbound route doesn't work

From: OpenSBC F. <ope...@op...> - 2008-11-19 22:34:01

Vitaly,

Let me replicate your setup locally and get back to you on that CANCEL issue.  For the meantime, however, I can see that the domain in the INVITE to URI is not the same domain you configured for you trunk.  If your trunk domain is "sip:foobar.com", inbound INVITe should have that domain in the To URI so OpenSBC would know which trunk segment to use for routing.

Joegen

> {quote:title=Vitaly wrote:}{quote}
> 
> My aim is not to do hairpin.
> 
> I want to trunk inbound calls only. So I have been tried to test a direct call from analog phone to sip-trunk and I got "SIP/2.0 405 Method Not Allowed"
> 
> May be it is because NAT problem?
> 
> I added UpperReg route [sip:*@ext.ip:9006] sip:int.ip:9006   but it doesn't help.
> 
> May be it is need to add prerouting rule to iptable? 
>

Re: [OpenSBC] SipX<=>OpenSBC: inbound route doesn't work

From: OpenSBC F. <ope...@op...> - 2008-11-25 15:42:31

Hi, Joegen 


I've installed OpenSBC v.1.1.5 RC2 on another server with ext.ip. 


When I call from PSTN number 448755540 to number 41445551800 I got the next result


2008/11/25 17:18:42.257 ERR: [CID=0x0000] GC: CallSessionManager.cxx:535 CallSessionManager::OnCreateServerSession::CallSession Attempt to CreateReference() a NULL Pointer or none descendant of PObject!!!
2008/11/25 17:18:42.257 DBG: [CID=0x06cb] *** MESSAGE ARRIVAL *** No Session available to handle INVITE sip:41445001800@my_ext_ip:9006;transport=udp SIP/2.0
2008/11/25 17:18:42.258 DTL: [CID=0x0bfd] IST(1227626196313)    Event(SIPMessage) - SIP/2.0 500 Maximum Concurrent Connection Reached
2008/11/25 17:18:42.258 DBG: [CID=0x0bfd] TRANSACTION: (IST) SIP/2.0 500 Maximum Concurrent Connection Reached State: 2
2008/11/25 17:18:42.258 DTL: [CID=0x0bfd] IST(1227626196313)    StateProceeding-&gt;StateCompleted(SIP/2.0 500 Maximum Concurrent Connection Reached)
2008/11/25 17:18:42.258 DBG: [CID=0x0bfd] IST(1227626196313)    Timer H( 32000 ms ) STARTED
2008/11/25 17:18:42.258 DBG: [CID=0x0bfd] IST(1227626196313)    Timer G( 500 ms ) STARTED
2008/11/25 17:18:42.258 DBG: [CID=0x0bfd] Added ACK Transaction 279DF7A7-BA3B11DD-9734EA9F-DB957415@212.117.200.79~1o44b43a0372b9dd11870fd91503730f87|z9hG4bKc9c4.2b3ee7949af4ab8a4cc33ef47f04bf57.0|ACK
2008/11/25 17:18:42.259 INF: [CID=0x0bfd] &gt;&gt;&gt; SIP/2.0 500 Maximum Concurrent Connection Reached DST: 212.117.200.148:5060:UDP src=my_ext_ip:9007 enc=0 bytes=608
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       SIP/2.0 500 Maximum Concurrent Connection Reached
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       From:  &lt;sip:0448755540@212.117.200.148&gt;;tag=ffcc5d70113083cd38912c3472e27a3a
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       To:  &lt;sip:41445551800@212.117.200.148&gt;;tag=44b43a0372b9dd11870fd91503730f87
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Via: SIP/2.0/UDP 212.117.200.148;branch=z9hG4bKc9c4.2b3ee7949af4ab8a4cc33ef47f04bf57.0;rport=5060;received=212.117.200.148
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Via: SIP/2.0/UDP 212.117.200.148:5061;branch=z9hG4bKb14092bed380e45e3f6003f979886bf3;rport=5061
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       CSeq: 200 INVITE
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Call-ID: 279DF7A7-BA3B11DD-9734EA9F-DB957415@212.117.200.79~1o
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Record-Route: &lt;sip:212.117.200.148;ftag=ffcc5d70113083cd38912c3472e27a3a;lr&gt;
2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Content-Length: 0


What did I confuse?


--


Regard, Vitaly

Re: [OpenSBC] SipX<=>OpenSBC: inbound route doesn't work

From: Joegen E. B. <joe...@gm...> - 2008-11-25 16:22:04

Hi Vitaly,

The error you are seeing is 

SIP/2.0 500 Maximum Concurrent Connection Reached

is pretty much misleading.  I'll change this in the future.  The real 
meaning of this error for trunk calls is that OpenSBC was not able to 
map an account  to the inbound call.  Based on this error response, the 
domain is not correct.

SIP/2.0 500 Maximum Concurrent Connection Reached
From:  <sip:044...@21...>;tag=ffcc5d70113083cd38912c3472e27a3a
To:  <sip:414...@21...>;tag=44b43a0372b9dd11870fd91503730f87

As you can see, it is sending to 414...@21....  

if you configured your trunk like this

SIP-Trunk-Config=<siptrunk trunk-name="voipgateway.org" 
route-set="voipgateway.org" sip-domain="voipgateway.org" expires="20">

Then the INVITE should be

INVITE sip:41445551800ip.add.of.sbc:5066 SIP/2.0
From:  <sip:044...@vo...>;tag=ffcc5d70113083cd38912c3472e27a3a
To:  <sip:414...@vo...>;tag=44b43a0372b9dd11870fd91503730f87

HTH,

Joegen

OpenSBC Forum wrote:
> Hi, Joegen 
>
>
> I've installed OpenSBC v.1.1.5 RC2 on another server with ext.ip. 
>
>
> When I call from PSTN number 448755540 to number 41445551800 I got the next result
>
>
> 2008/11/25 17:18:42.257 ERR: [CID=0x0000] GC: CallSessionManager.cxx:535 CallSessionManager::OnCreateServerSession::CallSession Attempt to CreateReference() a NULL Pointer or none descendant of PObject!!!
> 2008/11/25 17:18:42.257 DBG: [CID=0x06cb] *** MESSAGE ARRIVAL *** No Session available to handle INVITE sip:41445001800@my_ext_ip:9006;transport=udp SIP/2.0
> 2008/11/25 17:18:42.258 DTL: [CID=0x0bfd] IST(1227626196313)    Event(SIPMessage) - SIP/2.0 500 Maximum Concurrent Connection Reached
> 2008/11/25 17:18:42.258 DBG: [CID=0x0bfd] TRANSACTION: (IST) SIP/2.0 500 Maximum Concurrent Connection Reached State: 2
> 2008/11/25 17:18:42.258 DTL: [CID=0x0bfd] IST(1227626196313)    StateProceeding-&gt;StateCompleted(SIP/2.0 500 Maximum Concurrent Connection Reached)
> 2008/11/25 17:18:42.258 DBG: [CID=0x0bfd] IST(1227626196313)    Timer H( 32000 ms ) STARTED
> 2008/11/25 17:18:42.258 DBG: [CID=0x0bfd] IST(1227626196313)    Timer G( 500 ms ) STARTED
> 2008/11/25 17:18:42.258 DBG: [CID=0x0bfd] Added ACK Transaction 279DF7A7-BA3B11DD-9734EA9F-DB957415@212.117.200.79~1o44b43a0372b9dd11870fd91503730f87|z9hG4bKc9c4.2b3ee7949af4ab8a4cc33ef47f04bf57.0|ACK
> 2008/11/25 17:18:42.259 INF: [CID=0x0bfd] &gt;&gt;&gt; SIP/2.0 500 Maximum Concurrent Connection Reached DST: 212.117.200.148:5060:UDP src=my_ext_ip:9007 enc=0 bytes=608
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       SIP/2.0 500 Maximum Concurrent Connection Reached
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       From:  &lt;sip:0448755540@212.117.200.148&gt;;tag=ffcc5d70113083cd38912c3472e27a3a
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       To:  &lt;sip:41445551800@212.117.200.148&gt;;tag=44b43a0372b9dd11870fd91503730f87
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Via: SIP/2.0/UDP 212.117.200.148;branch=z9hG4bKc9c4.2b3ee7949af4ab8a4cc33ef47f04bf57.0;rport=5060;received=212.117.200.148
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Via: SIP/2.0/UDP 212.117.200.148:5061;branch=z9hG4bKb14092bed380e45e3f6003f979886bf3;rport=5061
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       CSeq: 200 INVITE
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Call-ID: 279DF7A7-BA3B11DD-9734EA9F-DB957415@212.117.200.79~1o
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Record-Route: &lt;sip:212.117.200.148;ftag=ffcc5d70113083cd38912c3472e27a3a;lr&gt;
> 2008/11/25 17:18:42.259 DBG: [CID=0x0bfd]       Content-Length: 0
>
>
> What did I confuse?
>